Modify depends for monero's dependencies

Add readline, ldns, graphviz, unbound to depends packages

Add a cmake toolchain file to depends that is uniquely created for every build and placed in triple/share/toolchain.cmake
This file is then passed to cmake with -DCMAKE_TOOLCHAIN_FILE=/path/to/triple/share/toolchain.cmake

Add the boost locale package to depends

In the depends cmake toolchain file, a DEPENDS flag is added
to exclude, or change cmake checks done that are required for depends

Link miniupnpc and unwind from depends and not external

Add libiconv and icu4c to depends, required for mingw32 builds.

Headers (winsock) need to be lower case in order to compile on unix systems.
This should not affect building on windows.

1 files changed, 67 insertions, 0 deletions

diff --git a/contrib/depends/patches/cmake/cmake-1-fixes.patch b/contrib/depends/patches/cmake/cmake-1-fixes.patch
new file mode 100644
index 000000000..062c06767
--- /dev/null
+++ b/contrib/depends/patches/cmake/cmake-1-fixes.patch
@@ -0,0 +1,67 @@
+This file is part of MXE. See LICENSE.md for licensing information.
+
+Contains ad hoc patches for cross building.
+
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Tony Theodore <tonyt@logyst.com>
+Date: Fri, 12 Aug 2016 02:01:20 +1000
+Subject: [PATCH 1/3] fix windres invocation options
+
+windres doesn't recognise various gcc flags like -mms-bitfields,
+-fopenmp, -mthreads etc. (basically not `-D` or `-I`)
+
+diff --git a/Modules/Platform/Windows-windres.cmake b/Modules/Platform/Windows-windres.cmake
+index 1111111..2222222 100644
+--- a/Modules/Platform/Windows-windres.cmake
++++ b/Modules/Platform/Windows-windres.cmake
+@@ -1 +1 @@
+-set(CMAKE_RC_COMPILE_OBJECT "<CMAKE_RC_COMPILER> -O coff <DEFINES> <INCLUDES> <FLAGS> <SOURCE> <OBJECT>")
++set(CMAKE_RC_COMPILE_OBJECT "<CMAKE_RC_COMPILER> -O coff <DEFINES> <INCLUDES> <SOURCE> <OBJECT>")
+
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Tony Theodore <tonyt@logyst.com>
+Date: Tue, 25 Jul 2017 20:34:56 +1000
+Subject: [PATCH 2/3] add option to disable -isystem
+
+taken from (not accepted):
+https://gitlab.kitware.com/cmake/cmake/merge_requests/895
+
+see also:
+https://gitlab.kitware.com/cmake/cmake/issues/16291
+https://gitlab.kitware.com/cmake/cmake/issues/16919
+
+diff --git a/Modules/Compiler/GNU.cmake b/Modules/Compiler/GNU.cmake
+index 1111111..2222222 100644
+--- a/Modules/Compiler/GNU.cmake
++++ b/Modules/Compiler/GNU.cmake
+@@ -42,7 +42,7 @@ macro(__compiler_gnu lang)
+   string(APPEND CMAKE_${lang}_FLAGS_RELWITHDEBINFO_INIT " -O2 -g -DNDEBUG")
+   set(CMAKE_${lang}_CREATE_PREPROCESSED_SOURCE "<CMAKE_${lang}_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -E <SOURCE> > <PREPROCESSED_SOURCE>")
+   set(CMAKE_${lang}_CREATE_ASSEMBLY_SOURCE "<CMAKE_${lang}_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -S <SOURCE> -o <ASSEMBLY_SOURCE>")
+-  if(NOT APPLE OR NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 4) # work around #4462
++  if(NOT APPLE OR NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 4 AND (NOT MXE_DISABLE_INCLUDE_SYSTEM_FLAG)) # work around #4462
+     set(CMAKE_INCLUDE_SYSTEM_FLAG_${lang} "-isystem ")
+   endif()
+ endmacro()
+
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Tony Theodore <tonyt@logyst.com>
+Date: Tue, 15 Aug 2017 15:25:06 +1000
+Subject: [PATCH 3/3] add CPACK_NSIS_EXECUTABLE variable
+
+
+diff --git a/Source/CPack/cmCPackNSISGenerator.cxx b/Source/CPack/cmCPackNSISGenerator.cxx
+index 1111111..2222222 100644
+--- a/Source/CPack/cmCPackNSISGenerator.cxx
++++ b/Source/CPack/cmCPackNSISGenerator.cxx
+@@ -384,7 +384,9 @@ int cmCPackNSISGenerator::InitializeInternal()
+   }
+ #endif
+ 
+-  nsisPath = cmSystemTools::FindProgram("makensis", path, false);
++  this->SetOptionIfNotSet("CPACK_NSIS_EXECUTABLE", "makensis");
++  nsisPath = cmSystemTools::FindProgram(
++    this->GetOption("CPACK_NSIS_EXECUTABLE"), path, false);
+ 
+   if (nsisPath.empty()) {
+     cmCPackLogger(